package com.dgut;

import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;

import java.util.Arrays;

@SpringBootApplication
public class Demo1Application {
    public static void main(String[] args) {
        SpringApplication.run(Demo1Application.class, args);
    }

    @Bean
    public CommandLineRunner commandLineRunner(ApplicationContext ctx){
        return new CommandLineRunner() {
            @Override
            public void run(String... args) throws Exception {
                System.out.println("由Spring Boot注册的所有Bean：");
                String[] beanNames=ctx.getBeanDefinitionNames();
                Arrays.sort(beanNames);
                for(String beanName:beanNames){
                    System.out.println(beanName);
                }
            }
        };
    }

}
